Centering-tool.



f. PFLEIUEHER, 1R. L 1. Mmmm,

CENTERING TOOL. APPLICATION--FILD OCT. l?, ll. Q/l. Paented Nov. 16, 'i915i 2 SHEETS-SHEET l,

F. PFLEDERER, JR. 6@ J. N. BAGLEY'.

SENTERING ooL. PPLICATIOH FILED lOCT. 17. NH4.

1,169,752. l Patented Nw. 16, BHS,

2 SHEETS-SHEET 2.

31 wcm/tong PFLEIDERER, JR.. AND JOHN N. BAGLEY, OF'SUPERIOR, NEBRASKA.

CENTERING-TOOL.

Specification of Letters Patent.

Application filed October 17, 1914. Serial N0. 867,232.

Be. it known that we, Fano Prrrnainhn, Jr.. and .lona llicir, citizens of the l'nited States. residingat- Superioi, in the county ot urln; and State ot Xehraslr'a, have invented certain new and useful lmprorements in (fentering-Toolsg and wc do hereby declare the following;` to he a t'ull, clear, and exact such as `will enable others skilled in the art to which it appertains to malte and use the same.

This invention relates to centering tools or gages and the primary object ot the in Yention the provision ot a device ot this nature by means o'l' which the exact center 'ot a i ieee ot shatting or cylimilrical material may he easily and quickly ascertained.

Another object ot' this invention is the prru'ision of a centering' gage hy means ot which the diameter of the shat'ting or cylindrical hotly may he determined, and also to provide a hingedly connected a r which is secured to the gage for connecting it to a. ein;` or tor folding so that a series or set ot' the may be nested or teleseoped one within the other.

With the toregoing and other ohjects in view this invention consistsin such novel 'filatures ot construction. combination and arrangement ot' parts as will be hereinafter' more tally rilescribed.y illustrated in the accompanying drawings and claimed.

ln describing the invention in detail reference wili he had to the accompanying drawings wherein like characters designate like or corresponding parts throughout the sevreral views, and in which Figure 'l is a central hectfional View through the gage showing the same attached to one end ot' the cylindrical body and having a centering punch inserted through the opening' therein. Fig. 2 is a view show intr a series ot the ,gages attached to a ring'. Fig. l is: a perspective view of a modified form ot the invention showing the, same applied to one, end ot the cyliinlrical liody and a. centering punch inserted tlnl'eilllUllg'lL Fig. if is a top plan view of the, moddicd form showing the matter ot telescoping; the various gages, and Fig. 5 is a detail side' elevation showing a Set ol the, gages partially telescope-,d one within the, other.

Referring more particularly to the. drawings. l defisia'nates rings which torni the sale. cl the gage, said rings haring their in description ot the invention,

ner diameter of various sizes, to accommodate various sizesof shafts or cylindrical bodies, principally ot' shafts which are made in standard sizes. .l`he ring l has secured to theupper end thereotl and extending' diametricalbY across thev Same an arm 2, which arm is provided with an opening 3 extending therethrough which opening is positioned exactly in the center of the inner diameter ot the ring l, .so that when the ring is placed upon the end ot a piece ot shatting as is shown in Fig. l and indicated by the numeral i, the opening` 3 will he in alinementwith the center of the shatting. A center punch indicated at 5 in Fig. l ot' the drawing.`l inserted through the opening 3 will puncture or niark the exact center of the shaft-ing when it is inserted through the opening 8.

The ring l has an ear secured thereto and projecting radially from `the outer Surface thereof, which ear (3 is provided with an opening' i extending therethrough, so that the ringmay be mounted upon a key ring indicated at S in Fie'. 2 ot' the drawings, tor cariving a plurality of the gages and having them convenient, for use. The ring 1 may be used as a gage tor determiningT the diameter of sha tting or various other cylindrical bodies it it is so desired.

ln Figs. 3, l, and 5 of the drawings a modilied Jform ot' the gage is Shown composed ot a ring 2U identical in construction to the ring 1 and which has an arm 2l termed integrally therewith and extending diametrically across the ring, being positioned at the upper edge of the saine as is clearly shown in Fig. 3 ot' the drawings. The arm il is provided with an opening .22 which is positioned exactly in the center of the. inner diameter ot the ring 2l). The ring il) hasl secured thereto in any suitable manner, a leaf 28 of the hinged structure 2i. 'lho leat' lil ot' the hinged structure Q4: has the, leat 25 pivotally connected thereto, which latter leai' is' provided with an opening: 2li. 'l`he openingr Q6 is provided Jtor mounting upon a key ring` as indicated at 8 in Fig. 2 or to attaclnnent to any suitable device as desired. yBy the provision ot hingedly connecting the lcat' to the ring 2f), various rings ot dill'erent diameters may be, tcleseoped one within the other as is clearly shown in Figs. iand 5 ol" the drawings, hy loding the. leaves 23 and 25 upon each other as is shown in Fig. ft.

PatentedNov. 16, 19,15. .y

e i'o In reducing the invention to practice certain niinor features of construction, conibifnation and arrangement'of parts may necessitate alterationsgto whiclithe patentee is entitled provided such alterations are eoniprehended within the scope of4 what is Claimed.

What is claimed is vv1. In a. device as set forth, a ring having its inner diameter oi a predetermined size, an aiin secured to said ring and extending diainetrically across the same, said arm liaving an opening kext-ending ltherethrough, which opening is positioned exactly in the center of the inner diameter of said'ring,

said ring having ahinge 'leaf securely attached thereto, a second hinge leaf pivotally connected to said first named hinge leaf, said second hinge leaf having an opening extending therethrough.

- 2. In a centering gage, a metallic ring having ar predetermined inner an arni formed integrally vitli said ring and extending with the ring adjacent to the upper edge of the latter, said arni having its central portion enlarged and provided with a centering opening.

In testimony whereof ive aiX our signatures 'in presence of two Witnesses.

FRED PFLEIDERER, Jn. JOHN N. BAGLEY. Witnesses:

F. M.` SWEET, J. LLOYD' RANKIN.

diameter, and' diametrieally across the ring, said armV having its ends formed integral 

